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本文根据现场实测资料和调研结果,从爆破效率、煤破块度、爆破震动对围岩稳定性的影响三方面进行综合性分析,认为起爆时差是影响爆破效果的一个重要因素,得出在我国目前现有爆破器材的条件下最佳起爆时差为200～250ms的结论。
Based on the measured data and the survey results, this article analyzes the impact of blasting efficiency, coal fragmentation and blasting vibration on the stability of surrounding rock in three aspects. It is concluded that the blasting time difference is an important factor affecting the blasting effect. Currently the best blasting time under the conditions of blasting equipment is 200 ~ 250ms conclusion.